Electric insulator



Dec. 23, 1930. R. T. LoBDELl. 1,785,816

ELEGTRI C INSULATOR Filed March l2, 1930 Patented Dec. 23, 1930 UNITEDy STATES j ,v ,j 1,785,816

ROY T. LOBDELL, OF NEWBURGH, NEW YORK ELECTRIC INSULATOR Application filed March 12, 1930.` Serial No. 435,191.

This invention relates to electric insulators slot extending from end to end of the body.

and has special reference to an antenna supporting insulator.

One important object of the invention is to provide an improved orm of insulator constructed to keep the connections of the wires with the insulator dry at all times.

A second important object of the invention is to provide an insulator of improved construction designed to prevent bridging of rain, snow or ice across the space between the antenna and supporting wires and thus to prevent short circuiting of the antenna at these points.

A third important object of the invention is to provide an improved antenna for this purpose so designed that the insulator is supported by two supporting wires spaced laterally so that the position o1 insulator is constant.

With the above and other objects in view, the invention consists in general of certain novel details of construction and combinations oi parts hereinafter fully described,

illustrated in the accompanying drawings and speciiically claimed.

In the accompanying drawing like characters of reference indicate like parts in the several views, and:

Figure 1 is a side elevation of the improved insulator;

Figure 2 is a section on the line 2-2 of Figure 1;

Figure 3 is an elevation of one end of the insulator;

Figure 4 is an elevation of the other end;

Figure 5 is a section on the line 5-5 of Figure 1; and

Figure 6 is a side elevation of a slightly modiied form of the insulator.

In the embodiment of the invention herein disclosed, the invention is shown as made of glass or other suitable insulating material and consists of a tubular body 10 provided with a longitudinally extending slot 11, this Centrally of the body Vthere is provided a transverse partition 12. Projecting centrally from this partition on one side thereof is an eye 13 Jfor attachment of one end of an antenna wire. On the opposite side of the partition a pair of eyes 14C which are positioned diametricallyopposite each other and project from the angle between this side of the partition and the inner surface of the body. The eyes all lie in the same plane, this plane being at right angles to the plane extending radially of the axis of the cylinder and passing through the center line of the slot.

The form shown in Figure 6 is slightly modified by having the slotted side bevelled 0H at each end as shown at 15.

In each form, two supporting wires are connected to the eyes 14 and are intended to be connected to a fixed support at horizontally spaced points so that the slot 11, which is provided for convenience in attaching the wires, is always maintained in a downwardly facing position. By this means the eyes are protected from rain, snow and ice and bridging of the connections of the wires is prevented with consequent elimination of short circuiting, and the squeals, squeaks and fading caused by such bridging.

There has thus been provided a simple and efiicient device of the kind described and for the purpose speciied.

It is obvious that changes may be made in the form and construction of the invention without departing from the principles thereof. It is not, therefore, desired to confine the invention to the exact form herein shown and described but it is desired to include all such as come within the scope claimed.

Having thus described the invention, what is claimed is A strain insulator formed integrally of insulating material including a tubular body having a central transverse partition, an eye projecting :from one side of the partition centrally thereof, and a pair of eyes projecting from the opposite side of the partition and spaced from the center thereof, said tubular body having an access slot extending longitudinally and from end to end thereof, said eyes being positioned in a plane radial to the axis of the body and at right angles to a similar radial plane passing through the 10ngitudinal center line of the slot.

In testimony whereof I aix my signature.

ROY T. LOBDELL. 

